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Finding the Fourth Proportional to 161,991.69, 242,989.70 and 56,813.73

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Solution

The fourth proportional to 161,991.69, 242,989.70 and 56,813.73 is: 85,221.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,991.69 : 242,989.70 = 56,813.73 : x
  2. Step 2: Convert to fraction form
    161,991.69/242,989.70 = 56,813.73/x
  3. Step 3: Cross multiply
    161,991.69x = 242,989.70 × 56,813.73
  4. Step 4: Simplify right side
    161,991.69x = 13,805,150,924.51
  5. Step 5: Solve for x
    x = 13,805,150,924.51/161,991.69
  6. Step 6: Final answer
    x = 85,221.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.